EP 0274149 A1 19880713 - Gradient coil for a magnetic resonance imaging apparatus.

Title (en)

Gradient coil for a magnetic resonance imaging apparatus.

Title (de)

Gradientenspulen-Anordnung für einen Apparat zur Bilderzeugung mittels magnetischer Resonanz.

Title (fr)

Système de bobine à gradients pour dispositif d'imagerie par résonance magnétique.

Publication

EP 0274149 A1 19880713 (EN)

Application

EP 87202361 A 19871130

Priority

NL 8603076 A 19861203

Abstract (en)

A magnetic resonance imaging apparatus utilizes a gradient coil system (4) with different arc angles for different arc conductors of the essentially saddle-shaped coil elements of the magnet. As result, the arc conductors (34) can be oriented nearer to the radial symmetry plane (30) so that not only the spatial field homogeneity in an active zone (28) is maintained or improved, but also the efficiency of the gradient magnet system is substantially increased and the power stored in the coil is reduced, thus enabling faster switching.

IPC 1-7

G01N 24/06

IPC 8 full level

A61B 5/055 (2006.01); G01R 33/20 (2006.01); G01R 33/38 (2006.01); G01R 33/385 (2006.01)

CPC (source: EP KR US)

G01R 33/20 (2013.01 - KR); G01R 33/385 (2013.01 - EP US)

Citation (search report)

[A] WO 8604687 A1 19860814 - FIELD EFFECTS INC [US]
[A] GB 2170957 A 19860813 - OXFORD MAGNET TECH
[AD] US 4486711 A 19841204 - FRESE GEORG [DE], et al
[A] EP 0152588 B1 19871007
[A] EP 0086560 A1 19830824 - TECHNICARE CORP [US]
[A] EP 0140259 A2 19850508 - GEN ELECTRIC [US]
[XP] EP 0225814 A1 19870616 - THOMSON CGR [FR]

Designated contracting state (EPC)

DE FR GB IT NL

DOCDB simple family (publication)

EP 0274149 A1 19880713; EP 0274149 B1 19910918; CN 1011623 B 19910213; CN 87108118 A 19880615; DE 3773162 D1 19911024; FI 875274 A0 19871130; FI 875274 A 19880604; JP S63147450 A 19880620; KR 880008035 A 19880830; NL 8603076 A 19880701; US 4845432 A 19890704

DOCDB simple family (application)

EP 87202361 A 19871130; CN 87108118 A 19871130; DE 3773162 T 19871130; FI 875274 A 19871130; JP 30464987 A 19871203; KR 870013754 A 19871203; NL 8603076 A 19861203; US 12782687 A 19871201